Question

I would like to convert a possibly Decimal value prefixed with currency symbol into only numeric value.
For example –
The value can be like any of the following

String s1 = "£32,847,676.65";
String s2 = "£3,456.00";
String s3 = "£831,209";

I would like the result after conversion to be like – 32847676.65, 3456.00 and 831209.
I tried using the parse() method of the NumberFormat in this way –

NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.UK);
numberFormat.setMinimumFractionDigits(2);
Number num = nf.parse(s1);
double dd = num.doubleValue();
BigDecimal gg = new BigDecimal(dd);
System.out.println(gg);

But the result is – 32847676.649999998509883880615234375 which is not quite exactly the correct one.

I need it to be numeric so that may be I can perform some kind of calculation.
Can you guys guide me with what else can I try

Answer 1

You already parse the value correctly. The problem is this:

BigDecimal gg = new BigDecimal(dd);

You covnert the value to BigDecimal, and the rounding problems of doubles account for the decimal places after the dot. Use:

BigDecimal gg = new BigDecimal(dd).setScale(2);

or

BigDecimal gg = new BigDecimal(dd).setScale(2,RoundingMode.HALF_UP);